Breakfast casseroles are versatile dishes typically made by combining ingredients like eggs, bread, cheese, and various meats or vegetables. They are prepared in a single baking dish, making them easy to serve and perfect for feeding a group. These casseroles can be customized to suit different tastes and dietary preferences. Often baked in the oven, breakfast casseroles can be prepared ahead of time and stored in the refrigerator until ready to cook. This convenience makes them a popular choice for holiday gatherings, brunches, or busy mornings when a hearty meal is desired without much effort.